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The periplasmic nitrate reductase complex (NapABCDFGH). This system is believed to be energy coupled, either by H+ pumping or due to an involvement in the Q cycle. See family description and Brondijk et al. 2002.



NapABCDFGH of E. coli
NapA, 828 aas
NapB, 149 aas
NapC, 200 aas
NapD, 87 aas
NapF, 164 aas
NapG, 231 aas and 1 N-terminal TMS
NapH, 287 aas and 5 TMSs